Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Reexamination Certificate
2005-05-31
2005-05-31
Spitzer, Robert H. (Department: 1724)
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
C210S640000, C585S818000
Reexamination Certificate
active
06899743
ABSTRACT:
A process for treating mixtures of organic components, including azeotropic mixtures. The process includes a gas- or liquid-phase membrane separation step in conjunction with a dephlegmation step to treat at least a portion of the permeate vapor from the pervaporation step. The process yields a membrane residue stream, a stream enriched in the more volatile component as the overhead stream from the dephlegmator and a condensate stream enriched in the less volatile component as a bottoms stream from the dephlegmator. Any of these may be the principal product of the process.
REFERENCES:
patent: 2930754 (1960-03-01), Stuckey
patent: 3966834 (1976-06-01), Perry et al.
patent: 4553983 (1985-11-01), Baker
patent: 4774365 (1988-09-01), Chen et al.
patent: 4857078 (1989-08-01), Watler
patent: 4925562 (1990-05-01), te Hennepe et al.
patent: 4929358 (1990-05-01), Koenitzer
patent: 4952751 (1990-08-01), Blume et al.
patent: 5030356 (1991-07-01), Blume et al.
patent: 5147550 (1992-09-01), Wijmans et al.
patent: 5169533 (1992-12-01), Baker et al.
patent: 5256295 (1993-10-01), Baker et al.
patent: 5256296 (1993-10-01), Baker et al.
patent: 5290452 (1994-03-01), Schucker
patent: 5670051 (1997-09-01), Pinnau et al.
patent: 5769926 (1998-06-01), Lokhandwala et al.
patent: 6271319 (2001-08-01), Baker et al.
patent: 6755975 (2004-06-01), Vane et al.
patent: 2002/0007732 (2002-01-01), Mohr et al.
patent: 2004/0173529 (2004-09-01), Da Costa et al.
Caro, J. et al., “Zeolite membranes—state of their development and perspective,” Microporous and Mesoporous Materials 38, 3-24, 2000.
Di Cave, S. et al., “Mathematical Model for Process Design and Simulation of Dephlegmators for Binary Mixtures,” Can. J. Chem. Eng. 65, 559-564, Aug. 1987.
Lucadamo, G. et al., “Improved ethylene and LPG recovery through dephlegmator technology,” Gas Sep. and Purification, vol. 1, 94-102, Dec. 1997.
Jibb, R. et al., “The Potential for Using Heat Transfer Enhancement in Vent and Reflux Condensers,” Cal Galvin Ltd. website at http://www.calgalvin.co.uk
ews, no date.
Vane, L. et al.,“Separation of Vapor-Phase Alcohol/Water Mixtures Via Fractional Condensation Using a Pilot-Scale Dephlegmator . . . ,” J. Memb. Sci. (in press) 2003.
Wynn, N., “Pervaporation Comes of Age,” Chem. Eng. Progress 97, 66-72, Oct. 2001.
Neel, J., “Pervaporation” in Membrane Separation Technology Principles and Applications, R.D. Noble and S.A. Stern, Eds., 143-149, Elsevier, 1995.
Baker Richard W.
Mairal Anurag P.
Wijmans Johannes G.
Farrant J.
Membrane Technology and Research, Inc.
Spitzer Robert H.
LandOfFree
Separation of organic mixtures using gas separation or... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Separation of organic mixtures using gas separation or..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation of organic mixtures using gas separation or... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3460784